Bicycle hub and bearing



No. 607,727. Patented July l9, I898. BAKER.

BICY GLE HUB AND BEARING. (Application filed Apr. 14, 1897.)

(No Model.)

THE uonms earns 00.. PnaruuTl-(o. WASNINGTQN. u. c.

ing sprocket.

JOHN BAKER, OF PASADENA, CALIFORNIA.

BICYCLE HUB A ND BEARING.

SPECIFICATION forming part of Letters Patent No. 607,727, dated July 19,1898.

Application filed April 14, 1397.

T aZZ whom it may concern:

Be it known that I, JOHN BAKER, a citizen of the United States, residingat Pasadena, in the county of Los Angeles,.State of California,- haveinvented certain new and useful Im provements in Bicycle Hubs andBearings, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, whichform a part of this specification. Y

My invention relates to certain new and useful improvements in hubs forbicycles and kindred wheels; and my invention consists in features ofnovelty hereinafter described and claimed.

Figure I represents a longitudinal section of the crank-hub, showing thedivided crankaxle secured therein. Fig. II represents a side elevationin detail of one of the cranks, showing lugs thereon which engage ingrooves in the axle. Fig. III is a detailview showing the inner face ofone of the cranks and the grooves therein in which lugs on thesprocketwheels engage for forming a connection between thesprocket-wheel and the crank. Fig. IV is a transverse section of thecrank-hub, taken on line XII XII, Fig. I. Fig. V is a section taken online XIII XIII, Fig. I, shoW- Fig. VI is a section throughsprocket,taken on line XIV XIV, Fig.V. Fig. VII represents a sideelevation of the grooved locking-key placed in the center of thecrankhub. Fig. VIII is a similar view showing different position of thelocking-key. Fig. IX represents an end elevation of the lockingkey.

Referring to the drawings, 1 represents a hub in which the crank 2operates.

3 represents a sleeve in the center of the hub, said sleeve beingthreaded on its inner face.

4 represents a divided axle having its inner ends threaded to engage thesleeve 3 and having cone-shaped sections 5 on its outer end, saidcone-shaped sections fitting into similar shaped openings 6 in thecranks in order to hold the cranks in position, there being lugs 7 inthe beveled openings 6 of the cranks which engage slots 8 in the axles,thus interlocking the cranks with the axles and cansing them to rotatetogether.

9 represents a sprocket-wheel having its be unscrewed from the sleeve 3.

Serial No. 682,100. (No an.)

outer face beveled-at 10 and having lugs 11, whichfit into recesses 12in the inner face of the cranks adjacent to the sprocket-wheel, by whichmeans the cranks and sprocket-wheel are interlocked, causing them torotate together, thein'ner face of the crank where it is joined by thesprocket-wheel being beveled, as shown at 13, to correspond with thebeveled portion of the sprocket-wheel.

14 represents an annular locking-key placed in the center of the sleeve3, said key having projections or lugs 15 on its ends, said lugsengaging in slots 16 in the inner ends of the axle 4:, thus interlockingthe two sections of the axle and causing them to rotate together.

16 represents an annular groove surrounding the locking-key 14, in whichengages the inner end of a screw 17 said screw extending through asleeve 3, the object of said screw being to prevent endwise movement ofthe locking-key. The groove 16, however, being somewhat greater indiameter than the inner end of the screw, permits a slight movement inan endwise direction of the locking-key in order to accommodate itselfto the axle. In order to provide means for taking the axle apart whennecessary, I provide an orifice 18 in the hub and sleeve, into which maybe inserted a pin 19, extending into the groove 16 of the locking-key,to prevent its movement endwise and permitting the divided axle to WVhenthe wheel is in use, the pin 19 may be withdrawn andjthe orifice inwhich it is inserted closed by means of a screw-cap 20.

21 represents a spacer surrounding the sleeve'3, said spacer havingpockets 22 in itsend, into which the bearing-balls 23 extend, the objectof the spacer being to keep the bearing-balls in their proper relativeposition to each other.

2& represents a nut placed on the axle 4, having an outer beveled face25 engaging an inner beveled face 26 of the sprocket-wheel, by whichmeans the sprocket-wheel is forced into contact with the crank 2, thelugs 11 on the sprocket-wheel being forced into the slots 12 on thecrank. The inner face of the nut 24: is provided with a bearingsurface27 ,on which the bearing-balls rotate, the opposite end of the axlehaving a nut 28 thereon, also forming a bearing for the balls 23.

29 represents the bearing-cups,threaded on their outer face and screwedinto the hub 1, said cups having a double-beveled face 30, by whichmeans they are made reversible, said beveled face forming the outerbearing for the bearing-balls 23. a

31 represents the dust-cap, screwedinto the hub 1 near its outer ends,said caps having beveled faces 32. The dust-caps are provided withrecesses 33, in which may be placed a screw 34, said screw having a pin35 on its inner end, said pin extending into a hole 36 in the cup 29,thus forming a connection between the dust-cap and the cup in order toadjust the cup to regulate the bearings, the cap 31 having a series ofopenings 33, in which a tool may be inserted to tightenup the bearings.The lugs for locking the axle to the cranks and the lugs for connectingthe sprocketwheel with the cranks are beveled, and the sockets intowhich they extend are also beveled in order to form a completeconnection between the parts.

The threads on the different ends of the hubs into which the cups 29 arescrewed are right and left hand threads and the threads at the endsthereof into which the dust-caps are screwed run in the oppositedirection, so that in screwing the dust-caps into' position the cups aredrawn toward the dust-caps,thus compensating for any wear. By reversingthe movement on the dust-caps after the pin has been removed they may bedetached without afiecting the position of the cups. The

rear and front hubs are of somewhat different construction peculiar totheir functions.

I claim as my invention 1; In a crank-hub for bicycles the combinationof the hub proper, suitable bearings therein, a sleeve within the hub, alockingkey within the sleeve, said locking-key having a central annulargroove, lugs on the locking-key, and recesses on the inner ends of thecrank-axle which engage said lugs, and means for engaging the annulargroove substantially nation with a divided axle,having cone-shapedsections on its outer. ends facing toward the center of the axle,.alocking-key, a sleeve havin g an internal right and left screw-threadand acrank havinga tapering opening through it in which thecone-sections on the outer ends of the axle are adapted to be seated,means for clamping the crank on said cone-section, substantially asdescribed.

4. In a bicycle-hub, the combination with a divided axle, cone-shapedsections integral with the outer ends of the same, facing toward thecenter of the axle, diametrically opposite beveled recessesin saidcone-sections, a locking-key for the axle, of a crank having a taperingopening throughout it, and diametrically opposite beveled lugs in saidtapering openings adapted to engage the recesses in said cone-sectionsand the cone-nu ts 27 substantially as described.

JOHN BAKER.

WVitnesses:

J. E. KNIGHT, J. A. ROELOFEZ.

